diff --git a/libraries/AP_Compass/AP_Compass_HIL.cpp b/libraries/AP_Compass/AP_Compass_HIL.cpp
index 1e3187a343..443785e9c4 100644
--- a/libraries/AP_Compass/AP_Compass_HIL.cpp
+++ b/libraries/AP_Compass/AP_Compass_HIL.cpp
@@ -1,12 +1,12 @@
 /*
-	AP_Compass_HIL.cpp - Arduino Library for HIL model of HMC5843 I2C Magnetometer
-	Code by James Goppert. DIYDrones.com
-
-	This library is free software; you can redistribute it and / or
-		modify it under the terms of the GNU Lesser General Public
-		License as published by the Free Software Foundation; either
-		version 2.1 of the License, or (at your option) any later version.
-*/
+ *       AP_Compass_HIL.cpp - Arduino Library for HIL model of HMC5843 I2C Magnetometer
+ *       Code by James Goppert. DIYDrones.com
+ *
+ *       This library is free software; you can redistribute it and / or
+ *               modify it under the terms of the GNU Lesser General Public
+ *               License as published by the Free Software Foundation; either
+ *               version 2.1 of the License, or (at your option) any later version.
+ */
 
 
 #include "AP_Compass_HIL.h"
@@ -15,18 +15,18 @@
 
 bool AP_Compass_HIL::read()
 {
-	// values set by setHIL function
-	last_update = micros();  // record time of update
-	return true;
+    // values set by setHIL function
+    last_update = micros();      // record time of update
+    return true;
 }
 
 // Update raw magnetometer values from HIL data
 //
 void AP_Compass_HIL::setHIL(float _mag_x, float _mag_y, float _mag_z)
 {
-	Vector3f ofs = _offset.get();
-	mag_x = _mag_x + ofs.x;
-	mag_y = _mag_y + ofs.y;
-	mag_z = _mag_z + ofs.z;
-	healthy = true;
+    Vector3f ofs = _offset.get();
+    mag_x = _mag_x + ofs.x;
+    mag_y = _mag_y + ofs.y;
+    mag_z = _mag_z + ofs.z;
+    healthy = true;
 }